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<H1><A name="SSI" id="SSI"></A>Chapter 7. eXtended Server Side Includes</H1>
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<DT><B>Table of Contents</B></DT>
<DT><A href="ssi.html#WHATARESSI">What are XSSI?</A></DT>
<DT><A href="ssisyntax.html">XSSI Syntax</A></DT>
<DT><A href="ssistrexpansion.html">Attribute Values</A></DT>
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<H1 class="SECT1"><A name="WHATARESSI" id="WHATARESSI">What are XSSI?</A></H1>
<P>XSSI (eXtended Server Side Includes) are a set of directives that can be put in a HTML page and interpreted by the web server while it sends the page to a client. You can use XSSI to insert in your HTML page:</P>
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<P>The value of an environment variable.</P>
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<P>The size and the last modification time of a file.</P>
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<P>A file.</P>
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<P>The output of a script or a shell command.</P>
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XSSI also supports conditional processing as well as declaring variables and setting their values.</DIV>
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